How to improve the performance of my Ford Fiesta?

I own a Ford Fiesta and I feel like it lacks power and speed. Are there any modifications or upgrades I can make to improve its performance? I want to be able to drive faster without impacting the fuel efficiency. Any suggestions?

You can start by installing an aftermarket performance intake and exhaust system. This will increase the airflow to the engine and allow it to breathe better, resulting in improved horsepower and acceleration. It will also add a nice growl to the engine.

Another option is to upgrade the ECU (engine control unit) software. This will optimize the engine's settings and potentially unlock some hidden power.